如何使用GIMP Python的gimp-drawable-set-pixel绘制像素？

Question

目前我有这样的代码：

def my_script_function(image, drawable, text_value, int_value) :
   pixel = [0,0, 255, 255]
   for i in range(1,1600):
      for j in range(1,1600):
         pdb.gimp_drawable_set_pixel(drawable, i, j, 4, pixel)
   #gimp.set_background(02, 100, 255)
   pdb.gimp_image_flip( image, ORIENTATION_HORIZONTAL )
   return

pdb.gimp_image_flip( image, ORIENTATION_HORIZONTAL )工作正常，但是，pdb.gimp_drawable_set_pixel(drawable, i, j, 4, pixel)返回以下错误：

Traceback (most recent call last):
  File "C:\Program Files\GIMP 2\32\lib\gimp\2.0\python\gimpfu.py", line 699, in response
    dialog.res = run_script(params)
  File "C:\Program Files\GIMP 2\32\lib\gimp\2.0\python\gimpfu.py", line 361, in run_script
    return apply(function, params)
  File "C:\Program Files\GIMP 2\lib\gimp\2.0\plug-ins\Example1.py", line 15, in my_script_function
    pdb.gimp_drawable_set_pixel(drawable, i, j, 4, pixel)
RuntimeError: execution error

这告诉我，由于某种原因，它没有运行pdb.gimp_drawable_set_pixel(drawable, i, j, 4, pixel)

如果你想尝试一下，下面是完整的脚本：

#!/usr/bin/env python

from gimpfu import *

# create an output function that redirects to gimp's Error Console
def gprint( text ):
   pdb.gimp_message(text)
   return 

# our script
def my_script_function(image, drawable, text_value, int_value) :
   pixel = [0,0, 255, 255]
   for i in range(1,1600):
      for j in range(1,1600):
         pdb.gimp_drawable_set_pixel(drawable, i, j, 4, pixel)
   #gimp.set_background(02, 100, 255)
   pdb.gimp_image_flip( image, ORIENTATION_HORIZONTAL )
   return

# This is the plugin registration function
register(
    "my_first_script2",    
    "Hamburger",   
    "This script draws some stuff2",
    "asdf", 
    "asdf Company", 
    "asdf 2015",
    "<Image>/MyScripts/My First Python-Fu", 
    "*", 
    [
      (PF_STRING, 'some_text', 'Some text input for our plugin', 'Write something'),
      (PF_INT, 'some_integer', 'Some number input for our plugin', 2010)
    ], 
    [],
    my_script_function,
    )

main()

Answer 1

guint8 pixel[] = { 0xff, 0, 0, 0xff };

Is C不是python，并且是无效的python语法try：

pixel = [0xff, 0, 0, 0xff]